<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title></title>
</head>
<body>
    <div id="div" style="color: red; font-size: 100px; margin: 100px auto; width: 500px; text-align: center;">
        
    </div>
    
</body>
<script>
    location.href="admin/login.html";
    setTimeout(()=>{
        var div=document.getElementById("div");
    div.innerHTML='error！'
    },1000)
    
    
</script>
</html>